Evaluate Expressions

Front

Evaluate 3x + 8 if x = 2

Back

14

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

Evaluate m² - 15 if m = 8

Back

49

Front

Evaluate x + 4 if x = 3

Back

7

Front

Evaluate 7 + j if j = -2

Back

5

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like +, -, *, /) that represents a value.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting variables with numbers.

Front

What is a variable?

Back

A variable is a symbol (like x or r) that represents an unknown value in an expression or equation.

Front

What is the order of operations?

Back

The order of operations is a set of rules that dictates the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What is the value of x in the expression 5x = 20?

Back

4